B29C 45/82
Hydraulic or pneumatic circuits
Official title: Hydraulic {or pneumatic} circuits
B29C45/82 (Hydraulic or pneumatic circuits) appears on 203 US grants and 170 published applications in this corpus.
Search patents in B29C- Granted patents
- 203
- Published applications
- 170
- Assignees
- 107
- Inventors
- 343
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 0 |
| 2002 | 7 | 4 |
| 2003 | 2 | 9 |
| 2004 | 6 | 7 |
| 2005 | 4 | 3 |
| 2006 | 6 | 6 |
| 2007 | 6 | 12 |
| 2008 | 7 | 15 |
| 2009 | 3 | 7 |
| 2010 | 7 | 2 |
| 2011 | 6 | 4 |
| 2012 | 6 | 7 |
| 2013 | 1 | 10 |
| 2014 | 3 | 8 |
| 2015 | 6 | 9 |
| 2016 | 7 | 6 |
| 2017 | 6 | 9 |
| 2018 | 6 | 8 |
| 2019 | 5 | 1 |
| 2020 | 3 | 8 |
| 2021 | 8 | 3 |
| 2022 | 3 | 5 |
| 2023 | 3 | 8 |
| 2024 | 7 | 7 |
| 2025 | 7 | 8 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydraulic circuit for opening and closing mould of injection moulding machine, and injection moulding machine system28 Jul 2026US 12,691,622 B2Danfoss A/S
- Hydraulic device and method for regulating a hydraulic device12 May 2026US 12,623,389 B2Arburg GmbH + Co KG
- Injection molding apparatus24 Feb 2026US 12,558,828 B2INGLASS S.p.A.
- Oil-electricity hybrid injection molding machine20 Jan 2026US 12,528,239 B2Suzhou Gienkee Plastic Technology Co. , Ltd.
- Dual injection system and synchronization control method thereof30 Dec 2025US 12,508,759 B2Ningbo LK Technology Co., Ltd.
- Injection molding machine and control method thereof27 Aug 2026US 2026/0249534 A1Delta Electronics, Inc.
- System for operating clamp axis of an injection molding machine and method thereof13 Aug 2026US 2026/0234909 A1
- Dual-accumulator oil circuit system for die-casting machine9 Jul 2026US 2026/0192356 A1Ningbo LK Technology Co., Ltd.
- Method for operating a hydraulic system of an industrial machine1 Jan 2026US 2026/0002553 A1Baumueller Nuernberg GmbH
- Dual injection system and synchronization control method thereof20 Nov 2025US 2025/0353233 A1Ningbo LK Technology Co., Ltd.
Most cited
By later US patents
- Injection molding system having a digital displacement pump98US 8,641,399 B2Husky Injection Molding Systems Ltd. · 2014
- Closed-system electrohydraulic actuator93US 7,051,526 B2Moog Inc. · 2006
- Manifold system having flow control87US 6,464,909 B1Synventive Molding Solutions, Inc. · 2002
- Electric motor driven inline hydraulic apparatus56US 5,181,837 AVickers, Incorporated · 1993
- Relief valve arrangement38US 4,501,291 AVickers, Incorporated · 1985